TUSTIN, Calif.--(BUSINESS WIRE)--Today MAPLE Business Council, a non-profit organization promoting trade and investment between Southern California and Canada, announced a social media campaign to bring attention to the close ties enjoyed by the two regions. Starting on July 1st, MAPLE will launch a Twitter campaign that will issue hourly tweets on cross-border trade and investment along with tweets from member organizations throughout the 48 hour period between the end of Canada’s national fou